Question

Решите неравенство ( x^{2} +4)( x^{2} – 4х +3)

Answer 1

$( x^{2} +4)( x^{2} - 4x+3) = x^4-4x^3+3x^2+4x^2-16x+12 = textgreater \ = x^4 -4x^3+7x^2-16x+12$